##### Other optional workers vars

Following vars should be set in order to use contentful or sentry services:

| Name                    | Description                             |
| ----------------------- | --------------------------------------- |
| CONTENTFUL_ACCESS_TOKEN | Contentful API access token             |
| CONTENTFUL_ENVIRONMENT  | Contentful environment name             |
| CONTENTFUL_SPACE_ID     | Contentful Space ID                     |
| SENTRY_DSN              | [Sentry](https://sentry.io/) client key |
